Dell OptiPlex 9020 All In One (Mid 2013) - Manual (Page 61)

Feature Specification
Relative humidity (maximum):
Operating 10% to 90% (non-condensing)
Storage 10% to 95% (non-condensing)
Maximum vibration:
Operating 0.66 GRMS
Storage 1.30 GRMS
Maximum shock:
Operating 110 G
Storage 160 G
Altitude:
Operating –15.2 m to 3048 m (–50 to 10,000 ft)
Storage –15.20 m to 10,668 m (–50 ft to 35,000 ft)
Airborne contaminant level G2 or lower as defined by ANSI/ISA-S71.04-1985
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